[Docs]: Clarify examples for Run Metadata Files attribute

[benfishbus]

What is the improvement or update to the Wiki you wish to see?

The examples provided for Run Metadata Files suggest the full name of the metadata files can be used, but I could only get it to work by dropping the file extension. For example, using "movies-smart" instead of "movies-smart.yml". (Sorry if this is a duplicate report, I am just getting back into tinkering with PMM after many months.)

Run Metadata Files

Run only the pre-defined metadata files

	Shell	Environment
--	-rm or --run-metadata-files	PMM_METADATA_FILES
--	--run-metadata-files "Movies.yml, MovieCharts"	PMM_METADATA_FILES=Movies.yml, MovieCharts

Does the docs page already exist? Please link to it.

https://metamanager.wiki/en/latest/home/environmental.html#run-metadata-files